Improvement in hay and cotton presses



ritiri-in NrO'HOLAs J. LAMPMAN, OF cOXsAoK'in, NEW YORK.

lMPROV-EIVIENT IN HAY AND COTTON PRESSES.

Specification forming pal-t of Letters Patent No. 4,8 l, dated October'l?, 1946.

ner of making, constructingfandusing the same, reference being had Lo the accompanying drawings, making a part of this specification, in whichn Figure lis an elevation of the press; Fig. 2, an end elevation-of part of the same, on an enlarged scale; Figs. 3 and l separate views of the windlass, and Fig. 5 a separate enlarged View of one of the compound rollers and pulleys.

The same letters indicate like partsin all the figures.

In the press patented by Vln. G. Van Hoesen on the 1st of February, 1842, the pro gressive levers that are attached to and operate the follower are worked by cords or chains attached directly to them, the lower ends of the levers being provided with rollers that run on the bed of the machine. lIf it be desired to apply a -double purchase to these'progressive levers, a pulley must be` attached to each of them, around which to pass the ropes or chains, so that, in addition to the friction of the rollers that run on the iioor of the press, there is the friction of the pulleysand the additional complexity of parts.

The object of my improvement is to obviate this difficulty and attain the desired end byA making use of the rollers on which the ends of the levers `run to answer the additional purpose of pulleys by making each roller with two treads to run on rails, each tread having an inner flange to guide it, and making a groove between the flanges of the I same diameter as the treads,for the reception of the rope or chain, to avoid the slip of the rollers on the rails. This arrangement, in

addition to the advantages above enumerated, admits of making the parts stronger,

and of working the levers up to a vertical line, which cannot be done with the old plan, for the space which would be occupied by the windlass and the. pulleys, with their attachments, would necessarily be greater than the space between the levers where they are jointed to the follower.

In the accompanying drawings,.A A represent the side pieces of the frame of the press, and BB the cross-ties. Gis the head of the press, (generally called the bed,) against which pressure is made by the followerD,which is carried up by twoprogressive levers, E E, one of their ends being jointed to the under part of the follower, and the other provided with rollers F F, that run on rails I I, laid on the floor H ofthe frame. Those rollers have their bearings in cast-iron plates o o, bolted to the ends of the levers, and they are each of them provided with two treads-one for each of the rails I-and aiiange on the inside of each tread, so that in running on the rails the flanges guide and steady them. Between the two anges the rollers are of the same diameter as the treads, and are there adapted to the reception of the chains G G, (or ropes, if preferred,) which are attached by one end to thebed H, pass around the rollers, and then are affixed to and wind on the windlass I) on the shaft of the cogwheel M. The body of this win'dlass should be formed with spiral grooves, as represented in section at Fig. 8, or in the form of two frustums of cones, connected by their bases, as represented in Fig. 4, to prevent the chains in vwinding on from overriding. Motion is communicated to the wheel 'M of the wind- 4lass by a pinion (represented by dotted lines) on the shaft ofa cog-wheel, L, which is turned by the pinion K on an arbor, J, operated by a crank-handle, or in any other desired manner. chains G G wind on the windlass-one above and the other below`and draw the levers E E inwardor toward each other, the treads of the rollers traveling on the rails with the same velocity as the chains move, so as to avoid all By the turning of the windlass the' desired end with less complexity and friction treads of the rollers and the pulleys around than by any other known means. which the chains or ropes pass being of equal That I Claim as my invention, and desire to diameters, to prevent slipping or bighting, all secure by Letters Patent, is substantially as liereindeseribed.

The method herein described of forming the NICHOLAS J. LAMPMAN. connection between the wndlass and the ends Wfitnesses: of the progressive levers by passing the chains Y CI-Is. M. KELLEY, or ropes by which they are operated around A. l. BROWNE.

tendency to bight or slip, thus attaining the I the rollers that run on the two rails, the 

